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A. C. 'ANDREw INDIA- RUBBER PACKING.

NOQ 96,654. Patented Nov. 9; 1869.

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A. 0.; ANDREWS, OF N W \HLAVIEN, oorurncuuour, AssIeNoR r0 WATER-PROOF SOLE COMPANY, or SAME PLAG'EQ 2 Letters Patent No. 96,654, datetlm ter 9, 1869.

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The gohednlereferred to l-n these {rotten Patent and making part of the same To all whom it may concern.-

7 Be itknown that I, A. C. ANDREWS, Of New Hayen, in the'county of New Haven, and State of Connecticut, have invented a new-Improvement in India- Rubber Packing or Gaskets; andI do hereby declare the following,'when taken in connection with the ac- Figure 3, a transverse sectiouon line a: z, enlarged.

Gaskets have heretofore been made by cutting the form required fi'onrfabricated sheetrubber, 'the clear rubber not answeringthe. purpose for steam-packing. This not only necessitates a great waste, but the steam will work through the fabric in the packing.-

The object of my invention is to overcome these difiiculties; and v It consists in moulding the gasket or packing from clear rubber, and introducing therein, at one or more points,-while the rubber is in a plastic state, one or more rings or continuous lines of wire, cord, or'- other suitable material to support the rubber, then vulcan izing the rubber, thus producing the article complete, without cutting or waste of material. 7

To enable others skilled in the art to make and use my invention, I will proceed to describe the same, as illustrated in the accompanying drawings.

A, fig. 1, is a flat ring, formed from clear rubber, or' any of its allied gums, in a mould prepared fon the purpose, and during the process of moulding, I in-' troduce, by preference, a metallic or wire ring, a, as denoted in broken-lines, then submit the moulded packing to the common yulcanizing process for its complet-ion. {This may be at any desired point within .or" 'uponthe rubber, it'being only essential thatitbe applied or embedded, so as to sustain the rubber against. the steam-pressure. I If preferred, another ring,-d,ias d enotedin 'i igs. 2 and i3,'ma'y be introduced, and for large packings this 'is desirable, and'may he done as-infig. 2,80 thatthe bolts, which connect the two parts upon the packing, will pass between the rings.

While the best results are attained bythe employment' of metallic rings, rings of cord, or. other material, may, instead, be introduced,

By this construction, while the rubber is sustained; evento a greater extent. than by the common fabricated rubber, there is no possibility for-the steam to" work through the packing, as it does in the fabric-in the common packing; and by moulding the packing, and

. vulcanizingitin the proper form,there is no waste of material.

' Thus'I'have produced a packing which possesses all the qualities of a clear-rubber packing, without'any of the objections to the fabricated packing in common use.

' Having fully described my invention,

What I claim asnew and useful,and desire to. sew cure by Letters Patent,

l Gaskets of India rubber, or any of its allied gurus, moulded and supported by embedding therein one or more rings or lines' of metal, or other suitable mate'- rial, substantiallyas herein set forth.

' A. '0. ANDREWS.

Witnesses;

- ALJVTIBBrrs,

J.'H. SKUMWA'Y, 

